Hitachi 50" rear projection. Dead!!

Model # 50UX57B, Chassis # AP83R, dead, was worked on elsewhere, both convergence IC's were replaced, & E995, E996, as well as IK04, & IK05. D910, & D9110 12 volt zener diodes shorted, C707 near the flyback, & horizontal output are fine, the SMPS just won't oscillate! The three opto couplers check ok, as well as the SMPS electrolytics! Ideas anyone? Thanks, Dani.

Reply to
Dani
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How does the pulse look did you check peak to peak & freq

Reply to
geno419

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